Din 50961 Fe — Zn 8b

Although Germany has largely adopted international standards like ISO 2081 (Zinc plating on iron/steel) and ISO 9227 (Salt spray testing), DIN 50961 remains widely used across Central Europe, particularly in the automotive, machinery, and fastener industries. The standard defines:

: Represents the minimum required local thickness of the zinc coating, which is (micrometers). din 50961 fe zn 8b

Historically, "b" passivation used hexavalent chromium (Cr VI). Due to EU RoHS and ELV directives, most modern Fe Zn 8b coatings use trivalent chromium (Cr III) . The corrosion resistance is similar, but the color is slightly less iridescent. Always clarify with your plater if hex-free is mandatory. particularly in the automotive